@Moderator_1 I think Market Data API(though websockets are good) but we will need to write quite some logic to refine the data into candles(15 mins, 5 mins).
Also, it might suffer inaccuracies if even few ticks are missed.Either of APIs suffer lag or downtime.
So, when I tried historical APIs to query , it gave results for current stock price with 1-2 seconds .
I would be happy to use historical APIs if there is no major disadvantage using them ?
Wanted to understand if historical APIs are down sometime during the working hours of stock market ?
Even if few seconds or 60 seconds or so delay in historical APIs to get current price of stock is fine with my algo strategy.
Can you throw light on above please ?